New editions of packs were release a few weeks back
Pepl (v2.3) - parameter estimation and
Bims (v3.0) - Bayesian inference of Model Structure
These include predicates for probabilistic inference and sampling in boths packs.
There is a workshop paper describing the new predicates:
Sampling and probabilistic inference in D/Slps.
Nicos Angelopoulos
in 10th Probabilistic Logic Programming workshop, July 2023
https://ceur-ws.org/Vol-3437/paper2PLP.pdf
Slides:
http://stoics.org.uk/~nicos/slides/23.07-PLP-Presentation-Nicos.pdf